Techniques for automatic network discovery for host configurations are described herein. A management server may receive a first message from a first host entering a network, where the first message includes a network identifier (ID) identifying a logical network coupled to a network interface card (NIC) of the first host. In response to the first message, the management server may automatically configure the NIC of the first host using one or more network configuration parameters of a second host based on the first message, where the second host has been coupled to the logical network prior to the first host.